The Pentagon Wants an AI Lie Detector (09/25/2026)

A lie detector has always depended more on the subject believing it works than on the science underneath it. The Pentagon’s proposal takes that old instrument and removes the part where the subject knows they are being measured, reading heart rate, breathing, skin temperature, and pore activity from a camera across the room. Underneath that, three biometric stories show the same drift from asking people to prove who they are toward simply observing them until the system decides.

Top 5 Critical Privacy Alerts

1. The Pentagon Requests $30.3 Million for a Camera-Based Lie Detector

The Defense Department is requesting $30.3 million over five years, pending congressional approval, for a program called Polygraph+ or Polygraph Next that combines AI with standoff sensing, meaning physiological readings taken without attaching devices, per MIT Technology Review. Prototypes track head movement, facial skin temperature, pore activity, heart rate, and breathing through standard cameras, and the program is aimed at employee vetting and insider threat detection. Experts quoted in the piece say no reliable physiological indicator of deception exists, that examiners already reach wildly different results, and that earlier multi-modal systems quietly faded away.

Operator Note: Insider threat programs are tempted by anything that promises to read intent. A tool that flags innocent people at higher rates in some groups than others will teach your workforce that the program is arbitrary, and people who think a program is arbitrary stop reporting to it.

2. Ireland’s Public Services Card Reopens the National ID Debate

Ireland is rolling out a new public services card alongside legislative changes that would make it acceptable as a general form of identification, and critics argue the country is moving toward a mandatory national ID without ever deciding to, per Biometric Update. National ID systems rarely arrive by a single vote, and this looks like the incremental route.

3. Revolut Brings Face Payments to UK Hospitality

Revolut is introducing face biometric payment authentication for UK hospitality businesses through a service called Pay with Smile, offering it to merchants with zero processing fees, per Biometric Update. Waiving the fee is how a new authentication habit gets built at the counter, before customers have thought much about where their face template lives.

4. Tencent Moves Palmprint Verification to Ordinary Cameras

Tencent’s Palm X product extends its palm biometrics to phones and computers with standard RGB cameras instead of dedicated readers, per Biometric Update. A palmprint captured by an ordinary camera can also be captured by one the person never agreed to.

Operator Note: Every biometric that no longer needs special hardware also no longer needs the subject’s cooperation. That shift is worth writing into any biometric policy you maintain.

5. The EU Sets Identity Rules for Cross-Border Health Data

The European Commission approved a legal framework for an interoperable cross-border identification and authentication mechanism covering patients, health professionals, and providers exchanging data through MyHealth@EU, per Biometric Update. Getting the identity layer right is the difference between a patient’s record following them across borders and following anybody who can impersonate them.

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